Furnace.



L. P. COHEN.

FURNAGE.

APPLICATION FILED NOY.15, 19o

Patented Mar. 2, 1909.

2 SHEETS-SHEET 1. 2

. ififvm ATTORNEY6.

L. P. COHEN.

FURNACE.

APPLIDATION TILED 11014115, 1904 Patented Mar. 2, 1909.

2 SHEBTSSHEET 2.

WITNESSES:

ATTORNEKS \JULLLAA NEW YORK, N. Y.

FURNACE.

Specification ofiiLettera Patent.

Patented March 2, 1909,.

Application filed November 15, 1904. Serial No. 232,794..

To all whom it may concern:

Be it known that I, LOUIS PIIILIPP UOHEN, a citizen of the United States, and a resident of the city of New York, county and State of New York, have invented certain new and useful Improvements in Furnaces, of which the following is a specification.

This invention relates to furnaces, and has particular application to certain improvements in the construction and formation of the top wall or roof thereof.

It has been found by experience that in large furnaces, such as those equipped with mechanical stokers, better results are obtainedin the free combustion of the fuel if the top wall at the mouth of the furnace lies in a straight horizontal plane, instead of being curved or arched, as is commonly the piyactice. This is due to the fact that the combustible gas generated by the distillation of coal, especially the carburetted hydrogen gas, accumulates in large volumes in the recess of the arch and interferes with the proper burning of the fuel. But when an approximately straight line wall, beveled or inclined toward the furnace on its under side, is substituted for the arch, the gases strikin against the wall are directed downward c ose to the body of the fire and mixing with air introduced through an air pipe or duct adjacent to such wall are consumed, and assist in the free combustion of the fuel )roducts. This straight line top wall has eretofore been constructed bf blocks of stone, fire-brick, or the like, cemented together by mortar or similar material. A wall of such formation embodies certain disadvantages,. inasmuch as it is diflicult and expensive to repair. For instance, should a certain block or brick in the wall be burned out, or otherwise rendered useless, the furnace must be thrown out of operation for a considerable period of time, while ali'nost the entire wall is rebuilt as it is practically impossible to remove a single stone or brick without disturbin and disengaging those adjacent. It is, t erefore, my intention to overcome such disadvantages by constructing the wall and providin certain mechanism whereby an individua brick or a series of. the same ay be easily and readily removed and oihers substituted, with a minimum ex enditure of time and labor and without isturbing the entire top wall,

portion of a furnace provided with my nus,

provements; Fig.'2 is a view in rear elevation of a wall constructed in accordance with my invention, such view also illustrating. the clamping supports employed for retaiin ing the individual blocks in position; such view being taken along the line 2, 2, of Fig. l, in the direction of the arrows. Fig. 3 is a view partly in elevation and partly in section, showing mechanism employed for tightening up the bricks of the wall by fore. I

ing such bricks into contact with each other; Fig. 4 is a perspective view of one of the bricks or blocks employed in my furnace,

such view also showing the asbestos sheet designed to be interposed between the individual bricks.

Referring to the accom anying drawings in detail, and particulary to Fig. 1, the letter A designates the main front wall of a furnace, such wall being provided with the usual throat B and a curved or arched re cess C. Depending from the front of the furnace in such manner as to form a face for the arch is a relatively large plate of sheet metal, such as is shown at 5. bar 8 having a web 7, is secured to the plate 5 by the rivets 6. This air bar extends across the entire front of the furmce mouth, and has communicating with its hollow interior 9 a plurality of short ducts 10 through which air is designed to be suppliedto the fire on the grate, to assist iii the combustion of the ga s generated by the d stillation of the coa fi The tubular air bar 8 is formed of any suitable metal and on thy;

A tubular air face adjacent to the furnace is provided at,

its upper end with a shoulder 11, and at its.

lower edge with the flange 12, the s ace lyetween the shoulder and the flange o'rming,"

a groove in which one edge of the fire bricks" l l may bev supported, as 15 hereinafter do scribed. At its uter vertical face the tiubu-.

1211' air bar is designed to assist in the siipport of the staking hopper, D, as is shown in 1* ig. 1, but as t 1e present invention in no wise relates to the construction of this hopper or its manner of operation, it is an necessary to describe the same in detail here.

My improved fire wall, which is designed to extendacross the mouth of the furnace in an approximately strai 'ht horizontal line, is

or inclined, as is shown at 15. the purpose of this being that when the blocks are assembled to form the wall the gases will strike against such beveled face and be defiected to a position close to the body of the fire. The straight vertical face 15 of the brick which is shown on the same side as the shoulder 13 is designed to rest in contact with the lower ed e c of the arched recess t, so that the assembled blocks will cut oti all communication between the recessC and the mouth B of the furnace, thus preventing the heat passinginto 'the recess C and affecting the brick-retaining.mechanism, for as such mechanism is formed of metal, it will be evident that it would be injuriously affected if sub'eeted to a high temperature.

hen the bricks are to be'assembled to form the wall, an asbestos sheet F is placed over each alternate brick, as is shown in Fi 2, so that each brick will fit snugly or tigitly against'those adjoining, and a solid wall ossessing fire-proof qualities will be provi ed. In erecting the wall each brick is placed with its shoulder 14, resting upon the fla e 12 of the tubular} air bar, the face of t he brick directly above said shoulder 1 1 fitting snugly in the groove formed as heretofore described, by the shoulder 11 and the flange 12. In order to support each brick independently so that it may be removed without disturbing its ,neigibors, I have provided the following "mechanism: Riveted, or otherwise secured, to the inner face of the web 7 is a bifurdatped lug 16 to which is pivotally secured the; sup ort 17. This support, which may be forme of any suitable material, such as metal. is in the .form of an angular arm, comprising the horizontally extending portion 18, when in position, and the vertically depending part 19 having a hook 20 formed at Its lower free end. As is clearly shown in Fig. 1, this hook is designed to fit into and engage with the recess formed by the shouldefi 13, and at its up er end such arm may e adyusted through means of the screw bolt 21 pivoted at 22 to a supporting arm, said bolt extends through the web 7 and carries at its outer end an ad'usting nut 23 adaptedtt o move along the or support in a desired osition. After the bricks have been assemb ed in position and 1t and holding the hanger arm The end :2? of the shaft 25 is adapted to bear against the Hat pressing plate 28, which, in turn, contacts with the face of the end-block of the arcln and as the screw shaft is act ualcd and fed inward toward the block through the medium of the worm 20 meshing with the gen r 26 the bricks may be forced one against the other to form a solid wall. As Will be seen by reference to Fig. 3, the shaft 30 ot' the worm 29 is turned by the hand wheel 31. said shaft being in the supporting yoke-plate 32 formed on the bracket 33. If desired, this means of forcing the bricks into and out of contact. at their sides. may be arranged upon both sides of the furnace.

From the above description taken in connection with the accompanying drawings. the construction and operation of m improvement will be readily apparent. l Vhen the bricks are to be assembled each alternate one is covered with the asbestos cloth, as heretofore described. Then the bricks are successively placed in position with one shoulder resting upon the flange of the tubular air bar, while the opposite shoulder is engaged by the hooked or turned end of the su )porting hanger arm, as has been described. The arm, which has its fulcrumed point at 16, may be then adjusted through the medium of the screw rod 21 to secure the brick tightly in position. When all the bricks forming the wall have been assembled, the hand wheel 31 ma be turned to bring their vertical faces tig itly in contact,

and the wall is then completed. Should one of the bricks be burned or otherwise destroyed, it is only necessary to turn the adjusting nut 23 upon theiscrew rod 21 and loosen the grasp of the hanger arm upon the brick or block, and the latter may then be easily and quickly removed from place and another substituted in its stead without disturbing or atfecting the adjoining block.

It will be observed that I have provided an exceeding] simple yet advanta eons construction 0 wall and while I have rarein shown and described. a preferred embodiment of my invention, I wish it to be under stood that I do not confine myself to all the precise details theses, as there racy modification and variation in certain respects without departing from the spirit of the invention or sacrificing any of the advantages thereof.

lVhat I claim is:

l. The combination with a furnace, of a fire wall therefor comprising a plurality of bricks, means supporting the bricks adjacent one end thereof, and means operable from outside the furnace wall for completing the support of the bricks, and for securing each of the bricks in position independently of the other.

2. The combination with a furnace, of a fire wall therefor comprising a plurality of bricks, means for sup orting the bricks adjacent one end thereof, adjustable means for completing the sup aort of the bricks, and for securing said ricks in position, and means extending through a portion of the front wall of the furnace and engaging with said adjustable means, for operating the same.

3. A structure of the class described, comprising a fire wall formedof a plurality of removable bricks, means for supporting the bricks adjacent one end thereof, adjustable mechanism for completing the support of said bricks and securing said bricks in position and means extending through a portion of the wall of the furnace and engaging with said mechanism for operating the same.

4. A structure of the class described comprising a fire wall formed of bricks, a stationary support for one end of said bricks, and pivoted means operable from outside the front of the furnace for engaging with and holding said bricks.

5. The combination with a-furnace, of a fire wall arranged near the mouth thereof, said wall comprising separable bricks, a stationary support for one end of the bricks,

supporting lugs, and means fulcrumed to the sup orting lugs and enga g with and completing the support of said b ricks.

6. A fire wall, comprising a stationary bar having a longitudinally extendin flange, a plurality of bricks resting ther on, and supported adjacent one end thereby, supporting devices fulcrumed above said bar and designed to engage-with and retain the bricks in position, and means operable from outside the furnace for operating said supporting devices.

7. In a fire wall, the combination of astationary support, a brick resting thereon and supported adjacent one end thereby, a hanger arm pivoted adjacent to the stationary support and adapted to engage with said brick, and complete the support of the same, and means for adjusting the hanger arm.

8. In a fire wall the combination of a pluralit of removable bricks, means for supporting said bricks independently adjacent one end thereof, pivoted means operable from outside the furnace wall for completing the support of said bricks, and means adapted to bear a ainst certain of said bricks to bring an maintain all of said bricks closely to ether.

9. In a fire wa the combination of a plurality of removable bricks, each brick having shouldered portions, and an inclined face, a support for the bricks adjacent one end thereof, and pivoted means engaging with the shouldered portion of each brick for completing the support of said brick independently of the others, said means bein operable upon its pivot to effect the removdl of said brick.

10. In a fire wall, a tubular bar having a flange at one side thereof, a brick adapted to have an edge restiu on said flange, an angular arm pivoted .bove the flange and designed to engage with an opposite edge of the brick, and operable upon its pivot to be brought out of engagement with said edge.

11. The combination with a furnace having a recess adjacent to the mouth thereof, of a fire wall comprising a plurality of removable bricks and arranged to cut ofi' com munication between the mouth and the recess, a bar secured at the front of the recess, and adapted to support the wall adjacent one end thereof, a plurality of hanger arms pivoted to the bar and acting as devices for completing the support of the wall, and means for adjusting each of said hanger arms to permit of the removal of a brick without changing the pivotal position of said hanger arm.

12. The combination of a plurality of independently supported, removable bricks arranged to form a strai ht fire wall, means for supporting the briclis adjacent one end thereof, a fire-proof material between adjacent sides of adjoining bricks, means for independently securing in position each brick, means operated from outside the furnace for actuating the last-mentioned means, and means bearing against the end bricks of the wallto hold all of the bricks in juxtaposition.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LOUIS PHILIPP COHEN.

Witnesses:

G. Lnvn, R. B. OAVANAGH. 

